Perhaps you should try some spelling variations:
truong thanh » truong trung, truong thpt, truong chung
trung khanh » truong khanh, trung thanh, trung phan
chieu xanh » chieu sach, chieu tinh, hieu manh
chieu sang » chieu sach, hieu lang, nhieu tang
trong ban » trong san, trong tan, trong quan
ban than » ban thanh, van thanh, ban hang
than cac » thanh cac, phan cac, thac cac

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((chieu xanh) or (chieu sang)) - thanh ((trung khanh) OR (truong thanh)) dung trong ban than cac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu xanh) OR (chieu sang)) - thanh ((trung khanh) OR (truong thanh)) dung trong ban than cac.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu xanh) or (chieu sang)) - thanh ((trung khanh) OR (truong thanh)) dung trong ban than cac".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu xanh) or (chieu sang)) - thanh ((trung khanh) OR (truong thanh)) dung trong ban than cac*.